 Your home with the most trusted and experienced real estate team in the U.S. Hi, this is Mark Spain, and our offers are the strongest in the industry. When you get a guaranteed offer from Mark Spain Real Estate, you can sell your home stress free and avoid the hassle of costly repairs. There are no showings, no open houses and no stress. One of our clients, Ruth, said it was wonderful working with Mark Spain Real Estate. I always felt like they had my back.